Double open end wrench with flexible nut engaging means



Dec. 3, 1968 B. L.. SMITH TRAFFIC SIGNAL LAMP CONTROL CIRCUIT Filed Dec. 17, 1965 |l||l.|| I l I I I l l w m muzi w. V3; P .w EW IBB@ 150m l zll EUH NWFP@ wm||| 1 JII l @N I w \I. @F lr P Il mk @o r@ o 'Nw no 3 1:2 lng I umo wtno no h o nu n .mmw mm vm mzaz zh z wm o t` x/ i v Y.. mwwk'l wtaom r.. I l l im@ l l I l I I l I l I l l I |I1-|| .mm w m Q m N l 5115528 29m @EE /Ilo i "INVENTOR BYBARR'Y I .SMITH www N United States Patent O 3,413,878 DOUBLE OPEN END WRENCH WITH FLEXIBLE ANUT ENGAGING MEANS William H. Mariner, 909 Spring Ave., Salisbury, Md. 21801 Filed Nov. 7, 1967, Ser. No. 688,644 3 Claims. (Cl. 81--64) ABSTRACT OF THE DISCLOSURE An improved box end wrench of double end type, each end having double socket sizes, and a groove in the shank of the wrench connecting each socket with a liexible band extending through said groove into each socket to be coiled in either socket t-o act upon a nut -or bolt.

This invention relates generally to box end wrenches.

More specifically it relates to box end wrenches that are ratchet operated.

VA principal object of the present invention is to provide a ratchet driven box end wrench of double end type.

Another object is to provide a ratchet driven box end wrench of double end type wherein each end is of double socket size so that the wrench may accommodate four different sizes of nuts or bolt heads, of which two are accommodated at each end.

Yet another object is to provide an improved box end wrench having a double size socket assembly at one end, and wherein each socket opening is fully adjustable to accommodate intermediate sizes of nuts and bolt heads, thus being capable to handle oversized and undersized nuts or bolt heads, regardless of the amount of oversize or undersize.

Yet a further object is to provide an improved box end wrench which is quickly adjustable to accommodate a particular size nut or bolt head.

Other objects are to provide an improved box end wrench which isl simple in design, inexpensive to manufacture, rugged in construction, easy to use and eflicient in operation.

These and other objects will be readily evident upon a study of the following specification and the accompanying drawing wherein:

FIGURE 1 is a side elevation view of the present invention,

FIGURE 2 is an edge view thereof,

FIGURE 3 is a side elevation View of a modified form of the invention,

FIGURE 4 is an edge view thereof,

FIGURE 5 is an enlarged detail of the invention shown in operative use, and

FIGURE 6 is a cross sectional view taken on line 6 6 of FIGURE 5.

Referring now to the drawing in detail, and more particularly to FIGURES 1 and 2, the reference numeral 10 represents an improved box end wrench according to the present invention wherein there is a main body 11 of elongated character having socket assemblies 12 and 13 at opposite ends.

Each socket assembly includes a rotatable head 14 seated within a circular opening 15 of enlarged end 16 rice 20 on the opposite side for the purpose of engaging square nuts or square headed bolts of different sizes upon opposite sides of the body. Obviously the square openings may be made hexagonal or other configuration s-o to accommodate hexagon nuts or bolts or parts of other shape. The peripheral side of the head includes aplurality of teeth 21 therearound.

A lever 22 is centrally pivotable about an extending pin 23, the lever being contained within a central cavity 24 within the body, 4and the pin extending outwardly on one side thereof to form a knurled knob that can be manually pivoted. At each end of the lever, there is a flexible tongue 25 forming a pawl that iS engageable with the toothed sides of the head.

In operative use, the head may be made rotatable either forwardly or reverse by simply iilipping the knob to align an arrow 26 on the knob end 'with forward or reverse indicia 27 marked on the body, thus causing the pawl to selectively lock rotation of the heads in either direction so to permit screwing or unscrewing action at each head.

In a modified construction shown in FIGURES 3 to 6, the box end wrench 30 includes an elongated body 31 having a nut or bolt head engaging opening 32 at one end which is of a relatively larger size on one side and relatively Lsmaller size on the other side, as shown at 33 and 34 respectively, and wherein the opening may be of any shape such as square (as shown) or hexagonal so to accommodate a particular shaped nut or bolt head.

In the present construction, a flexible band 3S of spring steel is slidable within a groove 36 within the body 31, the groove communicating at one end with large opening portion 33 'and at its other end with small opening portion 34.

Intermediate the ends of the groove, the groove partly encircles the side of an opening 37 at the.` opposite end of wrench body. The band 35 is longer than the groove in which it is slidable and accordingly may be coiled in either one of the opening portions 33 or 34.

In operative use, a nut or bolt head 38 of indiscriminate size is entered into either the larger or smaller opening portion which is closest thereto in size. The band 35 is then made to slide into the opening portion containing the nut or bolt head, coiling around the `same to ill in the space therebetween and the opening, thus acting `as a skin. A linger or other object introduced into the opening 37 can provide pushing movement for coiuling the band. When suicientamount thereof is coiledlto completely till the space between a nut and opening, the nut is tightly grasped to permit turning thereof with lthe wrench.

While various changes may be made in the detail construction, it is understood that such changes will be within the spirit and scope of the present invention.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a box end wrench, the combination of an elongated body forrning a handle, an opening in one end of said body to form a large socket on one side and a small socket on the other side for engaging dilerent size of nut or bolt heads, a groove within said body, a flexible spring steel band slidable in said groove, said groove at each end communicating with lone of said sockets to provide a means for shimming between said socket and a nut or bolt head placed therewithin.

2. The combination `as set forth in claim 1, wherein said band slidable in said groove is coilable at either end within said sockets around said nut or bolt head.

3. The combination as set forth in claim 2, wherein said groove at an intermediate point communicates with the side of an opening through the opposite end of said 3 4 body to allow introduction of a finger or tool for push- 2,181,012 11/1939 Bunting 81-64 ing Said band 1n Said groove- 2,317,037 4/1943 Donovan 81 3.43 References Cited 2,320,599 6/19415: Hickman 81-3.43 UNITED STATES PATENTS 5 3,200,676 8/ 196 Pagl 81--64 1,196,060 8/ 1919 Wilson 81-3,43 MYRON C. KRUSE, Primary Examiner.

2,057,949 10/1936 Hodson 81-64 

